342 TECHNICAL INFORMATION $BMDVMBUJOH #FMU 4QFFE 3A. Calculate the power requirement using Formula 6. A. Calculate the pulley mass using Formula 1. D.Calculate the safety ratio "S" from the maximum tension per belt unit "C" to compare the result with a given safety standard value. E.Calculate the belt speed under load using Formula 6 and Formula 7 and calculate the maximum belt speed at no-load using Formula 8 to verify that V is not greater than Vmax. C.Using Formula 3 and Formula 4, calculate the tight side tension of the belt "FM1" and the initial tension by design "FM2" to determine the maximum tension "FM". B. Calculate the effective tension of the belt using Formula 2. 3B. Calculate the maximum belt speed under load using Formula 7. *1 The maximum rotation speed of the belt is the upper limit. This maximum speed varies depending on the conveyor type, power supply frequency, and gear head deceleration ratio. 3C. Max. Belt Speed at No-load 5BCMF (FBS 3BUJP JO 6OJU $POWFZPS 5ZQF 1E 1E SVKA 0.5 SVKB 0.5 SVKN 1 SVKR 1 CVGA 0.5 CVGB 0.5 CVGC 1 CVGD 1 CVGN 1 CVGP 1 CVGR 1 CVGW 1 CVSFA 0.5 CVSFC 0.5 CVSFB 1 CVSFD 1 CVSE 1 CVSF 1 CVSX 1 CVSY 1 CVMATM 2 CVMABM 2 CVMASM 1 CVMBTM 2 CVMBBM 2 CVMBSM 1 CVLSA 1 CVSJA 1 CVSMA 1 CVSMB 1 CVDSA 1 CVSTD 1 CVGTA 0.5 CVGTB 1 CVGTN 1 CVGTP 1 CVSTC 1 CVSTR 1 CVSPC 1 CVSPA 1 CVSSA 1 CVSA 0.5 CVSB 1 CVSC 0.5 CVSD 1 CVSN 1 CVSP 1 CVSR 1 CVSW 1 CVSTA 0.5 CVSTB 1 CVSTN 1 CVSTP 1 Pulley O.D. on Return Side =28.6mm Pulley Unit Mass = 2.8g/cm3 Pulley I.D. on Return Side =8.2mm No. of Pulleys on Return Side =1 Pulley Length on Return Side =63mm π: Pi (3.14159) Wr ≈ 0.10 kg...From Formula 1 C≈0.88 Safety Ratio S > Safety Standard Value: Compliant S ≈ 4.57...From Formula 5 Safety Ratio S < Safety Standard Value: NG When Safety Standard Value is "2", S > 2 Compliant Motor Output = 6W Machine Efficiency = 0.5 V = 8.41 m/min...From Formulae 6 and 7 Motor Synchronous Rotation Speed = 1500 rpm@50 Hz Motor Gearhead Reduction Ratio = 5 Outer Diameter from Pulley Center to Belt Surface = 29.5 (Belt Thickness = 0.9) Gear Ratio in Unit = 0.5 Vmax = 55.61 m/min V speed is compliant...Formula 8 Friction Coefficient of Belt and Pulley =0.2 Contact Angle of Belt and Pulley =3.14(rad) Initial Tension per Belt Unit = 0.15 Belt Width = 50mm FM1≈43.76N FM2≈27.92N FM = FM1 or FM2, whichever is larger = FM1 FM ≈ 43.76 N...Determined from Formulae 3 and 4 Mass of Workpiece = 5kg Unit Length = 2000mm Friction Coefficient of Belt and Base Plate =0.4 Belt Unit Mass = 1kg/m2 Belt Width = 50mm Friction Coefficient of Belt and Pulley =0.2 Te = 20.42 N....From Formula 2 P : Power Requirement (kW) + : Machine Efficiency = 0.5 Pm : Motor Output (W) Formula 6 P=Pm t +/1000 V : Belt Speed (m/min) g : Gravitational Acceleration = 9.80665m/s2 Formula 7 V=102 t 60 t P t g/Te Vmax : Max. Belt Speed (m/min) Vm : Motor Synchronous Rotation Speed (rpm) [1500rpm@50Hz/1800rpm@60Hz] i : Motor Gearhead Reduction Ratio DD : Outer Diameter from Pulley Center to Belt Surface (mm) Pd1/Pd2 : [Select from the gear ratio in unit for each conveyor model] Formula 8 Vmax=[(Vm/i) t (π t DD/1000)] /(Pd1/Pd2) $BMDVMBUJPO &YBNQMF "T BO FYBNQMF DBMDVMBUF UIF TBGFUZ SBUJP BOE UIF NBYJNVN TQFFE PG B CFMU GPS UIF DPOWFZPS 47," Conveyor How to Calculate Conveying Capacity of Conveyor -Maximum Speed of Conveyor and Calculation Example -
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